Age of the Jurassic Radiolarian Chert Formation from the Zlatar Mountain (Sw Serbia)

02 Djeric 101 10-01-2008 11:51 Pagina 101

Ofioliti, 2007, 32 (2), 101-108 101

AGE OF THE JURASSIC RADIOLARIAN CHERT FORMATION FROM THE ZLATAR MOUNTAIN (SW SERBIA)

Nevenka Djeric«*,, Natasˇa Gerzina* and Stefan M. Schmid** * Faculty of Mining and Geology, University of Belgrade, Kamenicˇka 6, Belgrade, Serbia (e-mail: [email protected]), ** Geologisch-Paläontologisches Institut, Basel University, Bernoullistr. 35, 4058 Basel, Switzerland ([email protected]). Corresponding author, e-mail: [email protected]

Key words: Middle Jurassic, radiolarians, Internal Dinarides. Zlatar Mt., SW Serbia.

ABSTRACT

Detailed micropaleontological research of the Jurassic siliceous rocks in the Pavlovic´a Brod locality, located on the eastern flanks of the Zlatar Mt. in the Internal Dinarides, adjacent to the Dinaridic Ophiolite Belt, was performed. According to the determined radiolarian associations, the investigated cherts and radiolarites are of Middle Jurassic age. Radiolarian 2-7 UAZ from late Aalenian to early Callovian have been determined for the first time.

INTRODUCTION floor (Dinaric Ophiolite Belt and/or West Vardar Ophiolite Belt, corresponding to the Mirdita ophiolites of Albania) (2) Siliceous sedimentary rocks as cherts and radiolarites are Radiolarian chert sequences of either Triassic or Jurassic widespread in Serbia. They mostly occur in the internal parts age which are incorporated into a mélange formation under- of the Dinarides, close to ophiolitic units and/or within ophi- lying the obducted (Dinaric or West Vardar) ophiolites, in olitic mélange formations, less frequently in other geological the form of gravitationally emplaced olistoliths or “olisto- environments. Maximum accumulation of radiolarian cherts plaka” (Dimitrijevic´, 1997), or alternatively, as tectonically occurred in the Middle to Late Triassic, and in Middle to Late incorporated slivers scraped off the footwall, i.e. the Adriat- Jurassic, occasionally extending into the Cretaceous. ic margin (Schmid et al., submitted) and, (3) Jurassic-age ra- Such siliceous sediments are best exposed in western diolarian cherts that are integral part of an in situ passive Serbia. Within the Serbian part of the internal Dinarides, margin sedimentary sequence preserved at the footwall of Triassic as well as Jurassic radiolarians were described for the ophiolitic mélange. Radiolarites in settings (2) and (3) the first time by Goricˇan (pers. comm. 1988; 1990) and by were originally deposited onto older carbonaceous platform Obradovic´ and Goricˇan (1988) and Obradovic´ et al. (1986, sediments of the distal Adriatic margin, indicating drowning 1987/1988). Recent studies on radiolarian cherts in Serbia below the CCD. This drowning either occurred in Triassic stressed their importance for solving stratigraphic, paleo- times (documented in blocks within ophiolitic mélange on- geographic, tectonic and paleotectonic questions (Goricˇan et ly, i.e. Obradovic´ and Goricˇan, 1988; Goricˇan et al., 1999) al., 1999, Karamata et al., 2004, Djeric´ and Vishnevskaya, or in Jurassic times within continental margin sequences of 2005, 2006, Vishnevskaya et al., 2006). the internal Dinarides (also documented outside mélange Despite the available data, our knowledge of the Meso- formations, i.e. in East Bosnian Durmitor Unit, Drina-Ivan- zoic Radiolaria from Serbia is still insufficient. Particularly jica Unit; Dimitrijevic´, 1997; 2001). scarce are published data regarding Middle Jurassic Radio- Radiolarian cherts of Jurassic age, overlying the obduct- laria on which this study concentrates. The information on ed ophiolites, appear to be preserved in Albania only (Prela Middle Jurassic Radiolaria from SW Serbia presented here et al., 2000; Chiari et al., 1994), due to the unconformable comes from a section which crops out at the locality cover of the ophiolites in Bosnia and Serbia with fluvial “Pavlovicá Brod” (Zlatar Mt., SW Serbia at 19°56.5’E lon- conglomerates and sandstones (Pogari Formation: Blanchet gitude, 43°26.0’N latitude, Figs. 1 and 2). While only mi- et al., 1970; Pamic´ and Hrvatovic´, 2000) and/or platform cropaleontological investigations regarding the Lower and carbonates and reefal build-ups after a latest Jurassic ero- Middle Triassic carbonate deposits, based on micropaleon- sional event. tological examination of thin sections and conodont analy- The radiolarites described here, found at the locality sis, have been performed so far at the mentioned locality Pavlovicá Brod, in SW Serbia, on the eastern flanks of the (Mitrovic´ et al., 1972; Sudar, 1977; 1986), data on the over- Zlatar Mt. area, about 15 km SE of Nova Varosˇ (Figs. 1 and lying Jurassic radiolarian cherts from this locality are pre- 2; 19°56.5’E longitude, 43°26.0’N latitude) could in princi- sented for the first time in this paper. ple be part of an ophiolitic mélange, which structurally underlies the ophiolites of the Dinaric Ophiolite Belt (Karama- ta et al., 1997), obducted in Late Jurassic times (Pamicét GEOLOGICAL SETTING al., 2002). Typically, such mélanges contain Triassic as well as Jurassic radiolarian cherts, occasionally in stratigraphic In the internal Dinarides in general, radiolarian cherts can contact with pillow basalts (i.e. Obradovic´ and Goricˇan, be found in 3 different tectonic settings: (1) Jurassic radio- 1988; Goricˇan et al., 1999). Alternatively, they could also larites as part of the in-situ preserved stratigraphic cover of represent the stratigraphical cover of a carbonate platform an ophiolitic sequence which represents obducted ocean sequence of Triassic age, which belongs to the Drina-Ivanjica 02 Djeric 101 10-01-2008 11:51 Pagina 102

102

Unit, i.e. part of a continental margin formation, which tec- late Anisian age and other facies types (Sudar, 1977, 1986); tonically underlies the ophiolitic mélange. Since modern The radiolarian cherts stratigraphically overlie a micrite of structural work is lacking in the area, we cannot firmly de- unknown (possibly Early Jurassic) age. cide between the latter two possibilities, but at this stage we Ten samples were collected from the radiolarian cherts definitely prefer the hypothesis that the studied chert se- that stratigraphically overlie the carbonates. Seven samples quence is part of a drowned carbonate platform, which be- (for stratigraphic position see Fig. 1) were productive and longs to the Drina-Ivanjica Unit (referred to as “Golija could be analyzed. Six samples (N¬ 41, N¬ 42, N¬ 43, N¬ Zone” by Rampnoux, 1974). 44, N¬ 45, N¬ 47) are pure radiolarian cherts and were on- In any case, the contact of these radiolarites with the un- ly treated with diluted 5-7% hydrofluoric acid, following the derlying Triassic carbonate sequences is stratigraphical. method of Pessagno and Newport (1972). Sample N¬ 46 Contrary to a widely accepted opinion among Serbian geol- contains some carbonate; it was treated first with acetic and ogists, the 35 m thick association of siliceous rocks (cherts then with HF acids. In all samples Nassellarians are much and radiolarites) at Pavlovic´a Brod (considered a member of more abundant than Spumellarians. The residues of the acid the “Zlatar Formation”), does not represent the sedimentary treatment, which yielded well preserved faunas, were stud- cover of oceanic crust, but rather that of the distal Adriatic ied for biostratigraphic purposes. The biostratigraphical margin (Schmid et al., 2006 and submitted), or alternatively, zonation was performed according to Baumgartner et al. that of an exotic terrane (Drina-Ivanjica terrane of Karamata (1995b). et al., 2004), irrespective of the question as to whether this The SEM LEITZ-AMR-1600T microscope at the ¨Ivan sequence is part of an ophiolite-bearing mélange or not. Rakovec¨ Paleontological Institute of RZC SAZU (Ljubl- jana) was utilized for precise identification and illustration of the radiolarians (see Plates 1 and 2). METHODS

The described radiolarian assemblages come from a sin- SECTION DESCRIPTION AND BIOSTRATIGRAPHY gle section at Pavlovic´a Brod (Fig. 1). The section starts with Carnian to Norian biomicrites in Hallstatt-type facies According to the sedimentological investigation, nine (Sudar, pers. comm. 2006); the older Triassic substratum in units (packages) could be distinguished (Fig. 1) amongst the the nearby area is characterized by Han Bulog limestones of siliceous deposits of the Pavlovic´a Brod section. The radio-

Fig 1 - Location and lithostratigraphic column of the Pavlovic´a Brod section, showing the principal radiolarian markers; UAZ after Baumgartner et al. (1995b). 02 Djeric 101 10-01-2008 11:51 Pagina 103

103

Fig. 2 - Tectonic sketch of the Dinarides (after Schmid et al., 2006), indicating the studied locality. The units mapped are, from external to internal: 1) External Dinarides (without subdivisions); 2) East Bosnian - Durmitor Unit; 3) Drina Ivanjica Unit (parallelized with the Korab Unit of Albania or the Pelagonian Massif of Greece, part of the Internal Dinar- ides); 4) Jadar and Kopaonik blocks (part of the Internal Dinarides); 5) Dinaric and West- ern Vardar ophiolites (parallelized with the Mirdita ophiolites of Albania, obducted onto the internal Dinarides in Jurassic times); 6) Sava Belt (Paleogene suture zone); 7) Eastern Vardar Ophiolites; 8) “European” units (Tisza-Dacia and Carpatho-Balkan). PB- Pavlovic´a Brod.

larian assemblages found in the nine units are the following unit could not be determined because it contains only Sti- (Fig. 3): chomitra sp. and Archaeospongoprunum ? sp. The first unit (4 m thick), composed of red chert with The uppermost horizons of the fourth unit (3 m), consist- limestone clasts, does not contain a microfauna (sample ing of turbiditic greenish-gray chert, contain the next datable N¬ 48). sample (N¬ 47). The radiolarian fauna is moderately-well The second unit (6 m) contains red thin-bedded cherts preserved, but relatively diverse. On the basis of the presence that gradually grades into green cherts. A Late Aalenian to of Stichocapsa convexa an early-mid Aalenian to early Early Callovian age (2-7 UAZ) of the red chert (sample N¬ Tithonian age (1-11 UAZ) could be inferred. The following 41) is confirmed by the presence of Triactoma jonesi, species were also determined from this chert: Eucyrtidiellum Unuma echinatus and Pseudodictyomitrella hexagonata. sp. Eucyrtidiellum sp. cf. E. quinatum, and Amphipyndax ? According to Beccaro et al. (2002), Unuma echinatus is sp. Considering the stratigraphic position of sample N¬ 47 known from the interval 1-7 UAZ. Pseudodictyomitrella within the entire section (see Fig 1 and age of the eighth unit hexagonata is characteristic of the Aalenian-middle Bajo- discussed below), the age of this unit ranges between Late cian (Lupherium officerense subzone; Grill and Kozur, Aalenian and late Bajocian (2-4 UAZ). 1986). However, this species was also found in the middle The fifth unit (3 m) is made of red, thin-bedded chert. Callovian-early Oxfordian (Suzuki and Gawlick, 2003). Sti- Sample N¬ 43, from which a small number of radiolarians chocapsa convexa is characteristic of the 1-11 UAZ (Baum- was extracted, was taken from this unit. Due to poor preser- gartner et al., 1995a). The radiolarian association also in- vation, only two species were determined: Archaeodicty- cludes Ristola sp. cf. R. praemirifusus, Stichocapsa sp., omitra sp. and Dictyomitrella ? sp. For this reason, a precise Acaeniotylopsis ? sp., Emiluvia sp., Paronaella sp., and age determination is rather difficult. Guexella ? sp. Considering the stratigraphic position of Turbiditic greenish-gray chert, with interlayers of lime- sample N¬ 41 within the section (Fig 1), the inferred age of stone, constitutes the sixth unit (6 m). Radiolarians are this second unit is bracketed between Late Aalenian and late poorly preserved. According to the presence of Hexasatur- Bajocian (2-4 UAZ). nalis hexagonus (1-4 UAZ) and Staurolonche ? robusta (4- Sample N¬ 42 was taken from the third unit (4 m), 10 UAZ), this unit is of late Bajocian age (UAZ 4) (sample made up of dark-gray to black bedded chert, with interlayers N¬ 46). The species determined as Trillus sp., and Parahsu- of green sandstone. The sample is characterized by a poor um ? sp. are also present in the radiolarian association. and badly preserved radiolarian association. The age of the The seventh unit is made of 3 m thick red chert. Sample 02 Djeric 101 10-01-2008 11:51 Pagina 104

104

Fig. 3 Stratigraphic ranges of selected taxa from Pavlovic´a Brod. Dotted lines show supposed stratigraphic ranges of taxa. See text for discussion of the age ranges.

N¬ 45 was taken from the uppermost layers of this unit. It CONCLUSIONS AND DISCUSSION contains many and diverse radiolarians. Associations UAZ 4 and 5 were determined by the presence of Tricolocapsa pli- Siliceous deposits from the Pavlovic´a Brod locality con- carum ssp. A (4-6 UAZ, Prela et al., 2000), Protunuma tur- sist of radiolarian cherts with clayey and limestone interlay- bo (4-7 UAZ), Unuma latusicostatus (2-5 UAZ), Tricolo- ers. On the basis of radiolarians determinations the analyzed capsa ? fusiformis (3-5 UAZ) and Saitoum levium (4-9 cherts were deposited between Late Aalenian and early UAZ). The association of radiolarians also contains the fol- Callovian. The radiolarian assemblages of our study area, lowing species: Transhsuum sp. cf. T. maxwelli gr., Transh- and from Serbia in general, indicate clear Tethyan affinities suum sp. cf. T. brevicostatum gr., Tethysetta dhimenaensis and can be correlated with radiolarian Zones 2-7 of the s.l., Tethysetta dhimenaensis ssp. A, Stichomitra ? taka- Tethys (Baumgartner et al., 1995b). noensis gr, Stichomitra sp. cf. S. tairai, Tricolocapsa sp. cf. The radiolarian assemblages constrain the age of drown- T. formosa, Eucyrtidiellum unumaense unumaense, Sti- ing of the carbonate platform of the Inner Dinarides (or al- chocapsa sp. cf. S. japonica, Sethocapsa funatoensis, Setho- ternatively, the Drina-Ivanjica terrane according to the capsa sp., Hsuum sp., Pantanellium sp. cf. P. riedeli, scheme of Karamata et al., 1997) to the earliest Middle Williriedellum sp. cf. W. carpathicum, Protunuma sp. cf. P. Jurassic (Aalenian). At this same time drowning is also ob- lanosus and Tricolocapsa ? yaoi. The age of this assem- served elsewhere in the carbonate platform of the Internal blage, according to the existing literature (Baumgartner et Dinarides, such as, for example, at two nearby localities al., 1995a,b), is Late Bajocian to early Bathonian. which are part of the East Bosnian-Durmitor Unit: Zaboj (8 The eighth unit (3 m) contains reddish, thin-bedded km south of Sjenica, Djeric´ and Vishnevskaya, 2006) and chert with clayey interlayers (sample N¬ 44). Radiolarians Krsˇ Gradac (5 km NW of Sjenica, East Bosnian-Durmitor are abundant, relatively well-preserved, and diverse. A latest Unit, Rampnoux, 1974, Djeric´, 2002). The duration of the Bajocian to early Callovian age (5-7 UAZ) was determined radiolarian cherts deposition is longer (Aalenian to early for this unit on the basis of the presence of the species Sti- Callovian) than that observed at the Zaboj locality (Aalen- chocapsa robusta. The following species were also identi- ian-Bajocian), but shorter than that observed at the Krsˇ fied from the radiolarian association: Eoxitus sp. cf. E. hun- Gradac locality (Bajocian to early Tithonian). Radiolarite garicus, Hsuum sp. cf. H. matsuokai, Parahsuum crucifer- deposition was followed by overthrusting of the ophiolitic um, Dictyomitrella sp., and Xitus sp. mélange, related to obduction of the Dinaric ophiolites in The uppermost, ninth unit (3 m) , made of red chert with latest Jurassic to earliest Cretaceous times. clayey interlayers, does not contain any fauna (sample N¬ Drowning of the distal Adriatic margin below the CCD 44a). postdates the Triassic ocean floor formation in the 02 Djeric 101 10-01-2008 11:51 Pagina 105

105

Neotethys realm (Meliata and/or Maliac Ocean), only geochronology, and geodynamic evolution. Tectonics, 20: 78-96. recorded within blocks that were incorporated into the ophi- Djeric´ N., 2002. Jurassic Radiolarians of the Dinaridic Ophiolite olitic mélange during obduction (Obradovic´ and Goricˇan, Belt between Nova Varosˇ and Sjenica (SW Serbia). Faculty 1988; Goricˇan et al., 1999). Interestingly, this drowning co- Mining Geol., Belgrade (Master thesis), unpublished, 80 pp. (in incides with the onset of intraoceanic subduction within the Serbian). Jurassic parts of Neotethys, which led to formation of the Djeric´N. and Vishnevskaya V., 2005. New Triassic radiolarian assemblages of Serbia and Montenegro. Micropaleontology on metamorphic sole yielding radiometric ages between 174 eve of centuries. 13th Russian Micropal. Conf., Moscow. GIN and 157 Ma (Dimo-Lahitte et al., 2001). Radiolarite deposi- RAN, November 2005, Abstr., p. 79-81. tion was followed by obduction of the Jurassic Dinaric ophi- Djeric´ N. and Vishnevskaya V., 2006. Some Jurassic to Creta- olites. Final obduction onto the Adriatic margin, however, ceous radiolarians of Serbia. Proceed. Ophiolites 2006, Meso- did not start until latest Jurassic times, judging from the age- zoic Ophiolite Belt of the northern part of the Balkan Peninsula, range of radiolarite deposition (Tithonian, Djeric´, 2002) at Belgrade-Banja Luka, May - June 2006, p. 29-35. the nearby Krsˇ Gradac locality. Goricˇan ·., Karamata S. and Batocˇanin-Srec´kovic´ D., 1999. Upper Triassic (Carnian-Norian) Radiolarians in cherts of Sjenica (SW Serbia) and the time span of the oceanic realm ancestor of ACKNOWLEDGEMENTS the Dinaridic Ophiolite Belt. Bull. Acad. Serbe Sci. Arts, Clas.. Sci. Mat. Nat., Sci. Nat., 39: 141-149. Grill J. and Kozur H., 1986. The first evidence of the Unuma echi- We wish to thank Zlatko Radovanovic´for his help in the natus radiolarian zone in the Rudabanya Mts. (northern Hun- field. We also greatly appreciate the assistance of Prof. gary). Geol. Paläont. Mitt. Innsbruck, 13 (11): 239-275. Valentina Vishnevskaya for her kind contributions during Karamata S., Krstic´ B., Dimitrijevic´ M.D., Dimitrijevic´ M.N., the preparation of this paper. Prof. P. Dumitrica and Dr. M. Knezˇevic´ V., Stojanov R. and Filipovic´ I., 1997. Terranes be- Chiari, as well as an anonymous reviewer, are gratefully ac- tween the Moesian Plate and the Adriatic Sea. Ann. Géol. Pays. knowledged for the critical reading of the manuscript and Héllen., 37: 429-477. the useful suggestions. One of the authors (N.Dj.) would Karamata S., Olujic´ J., Vujnovic´ L., Radovanovic Z., Zakariadze like to thank the supervisors of her master thesis: Prof. Mi- G., Vishnevskaya V., 2004. Comparative radiolarian stratigra- lan Sudar and Dr. ·pela Gorican. The work was supported phy of the basalt-radiolatite sequences of the Vardar and Dinar- nd by the Serbian Ministry of Science and Environmental Pro- ic oceanic suture zones within the limits of Serbia. 32 Intern. tection (project No. 146009) and by the Swiss Science Geol. Congr., Florence, August 2004, Abstr., 2: 1241. Mitrovic´I., Urosˇevic´ D., Mitrovic´ J. and Pavlovic´ M., 1972. New Foundation (project No. 200021-101882/2). data on Triassic in canyon of the River Uvac (Sandzˇak). Min- utes Serbian Geol. Soc. for 1968, 1969 and 1970, p. 397-400 (in Serbian, Cyrillic). REFERENCES Obradovic´ J. and Goricˇan ·., 1988. Siliceous deposits in Yu- goslavia: Occurences, types, and ages. In: J.R. Hein and J. Baumgartner P.O., Bartolini A., Carter E.S., Conti M., Cortese G., Obradovic´ (Eds.), Siliceous deposits of the Tethys and Pacific Danelian T., De Wever P., Dumitrica P., Dumitrica-Jud R., Regions. Springer-Verlag, New York, p. 51-64. Goricˇan ·., Guex J., Hull D., Kito N., Marcucci M., Matsuoka Obradovic´ J., Milovanovic´ D. and Vasic´ N., 1986. Siliceous rocks A., Murchey B., O’Dogherty L., Savary J., Vishnevskaya V., from Diabase-chert Formation, Point No. 4, Locality: Nova Widz D., and Yao A., 1995b. Middle Jurassic to Early Creta- Varosˇ-Bistrica. In: Guide-Book with Abstr., 3th Intern. Conf. ceous radiolarian biochronology of Tethys based on Unitary As- Silic. depos., IGCP Proj. 187, Yugoslavia, September, 1986). sociations. In: P.O. Baumgartner, L. O’Dogherty, ·. Goricˇan, E. Yugosl. Comm. IGCP, IGCP Proj. 187 “Siliceous deposits”, Urquhart, A. Pillevuit and P. De Wever (Eds.),. Middle Jurassic Belgrade, p. 58-62. to lower Cretaceous radiolaria of Tethys: Occurrences, systemat- Obradovic´ J., Milovanovic´ D. and Vasic´ N., 1987/88. Siliceous ics, biochronology. Mém. Géol., 23: 1013-1048. rocks in Mesozoic from Serbia in association with Diabase- Baumgartner P.O., O’Dogherty L., Goricˇan ·., Dumitrica-Jud R., chert and Porphyrite-chert Formation. Bull. Nat. Hist. Museum, Dumitrica P., Pillevuit A., Urquhart E., Matsuoka A., Danelian 42/43 (A): 23-49 (in Serbian, with English abstract). T., Bartolini A., Carter E.S., De Wever P., Kito N., Marcucci Pamic´ J. and Hrvatovic´ H., 2000. Dinaride Ophiolite Zone (DOZ). M. and Steiger T., 1995a. Radiolarian catalogue and systemat- In: J. Pamic´ and B. Tomljenovic´ (Eds.), Pancardi 2000 Field- ics of Middle Jurassic to Early Cretaceous Tethyan genera and trip Guidebook, Vijesti 37 (2): 60-68. species. In: P.O. Baumgartner, L. O’Dogherty, ·. Goricˇan, E. Pamic´ J., Tomljenovic´ B. and Balen D., 2002. Geodynamic and Urquhart, A. Pillevuit and P. De Wever (Eds.), Middle Jurassic petrogenetic evolution of Alpine ophiolites from the central and to lower Cretaceous radiolaria of Tethys: Occurrences, system- NW Dinarides: an overview. Lithos, 65: 113-142. atics, biochronology. Mém. Géol., 23: 37-685. Pessagno E.A. and Newport R.L., 1972. A technique for extracting Beccaro P., Baumgartner P.O. and Martire L., 2002. Radiolarian radiolaria from radiolarian cherts. Micropal., 18 (2): 231-234. biostratigraphy of the Fonzaso Formation, Middle- Upper Prela M., Chiari M. and Marcucci M., 2000. Jurassic radiolarian Jurassic, Southern Alps, Italy. Micropal., 48 (1): 43-60 biostratigraphy of the sedimentary cover of ophiolites in the Blanchet R., Durand Delga M., Moullade M. and Sigal J., 1970. Mirdita Area, Albania: new data. Ofioliti, 25 (1): 55-62. Contribution à l’étude du Crétacé des Dinarides internes: la re- Rampnoux J.-P., 1974. Contribution à l’étude géologique des Di- gion de Maglaj, Bosnie (Yougoslavie). Bull. Soc. Géol. France, narides: Un secteur de la Serbie méridionale et du Monténégro 12 (6): 1003-1009. oriental (Yougoslavie). Mém. Soc. Géol. France, 119, 99 pp. Chiari M., Marcucci M. and Prela M., 1994. Mirdita Ophiolite Pro- Schmid S.M., Fügenschuh B., Matenco L., Schuster R., Tischler ject 2: Radiolarian assemblages in the cherts at Fushe Arrez and M., and Ustaszewski K., 2006. The Alps-Carpathians-Dinar- Shebaj (Mirdita area, Albania). Ofioliti, 19: 313-318. ides-connection: a compilation of tectonic units. 18th Congr. Dimitrijevic´ M D., 1997. Geology of Yugoslavia. Geol. Inst. Carpat.-Balkan Geol. Ass., Belgrade, September 2006. Conf. GEMINI Spec. Publ., Belgrade, 187 pp. Proceed., p. 535-538. Dimitrijevic´ M.D., 2001. Dinarides and the Vardar Zone: a short Schmid S.M., Bernoulli D. Fügenschuh B., Matenco L., Schefer S., review of the geology. Acta Vulcan., 13: 1-8 Schuster R., Tischler M. and Ustaszewski K., in press. The Dimo-Lahitte A., Monié P. and Vergély P., 2001. Metamorphic Alpine-Carpathians-Dinaride orogenic system: correlation and soles from the Albanian ophiolites: Petrology, 40Ar/39Ar evolution of tectonic units. Swiss j. geosci., 101. 02 Djeric 101 10-01-2008 11:51 Pagina 106

106

Sudar M., 1977. On the Triassic microfacies of the Uvac canyon. der Radiolarien aus den Kieselsedimenten der Blaa Alm und Ann. Géol. Penins. Balk., 41: 281-291 (in Serbian, with English nördlich des Loser (Nördliche Kalkalpen, Callovium-Oxfordi- abstract). um). Mitt. Ges. Geol. Bergbaustud. Österr., 46: 137-228. Sudar M., 1986. Triassic microfossils and biostratigraphy of the Vishnevskaya V., ¬eric´ N. and Karamata S., 2006. Ophiolite-relat- Inner Dinarides between Gucˇevo and Ljubisˇnja Mts., Yu- ed and non-ophiolite radiolarites of the Balkan Peninsula. Pro- goslavia. Ann. Géol. Penins. Balk., 50: 151-394 (in Serbian, ceed. Ophiolites 2006, Mesozoic Ophiolite Belt of the northern with English abstract). part of the Balkan Peninsula. Belgrade-Banja Luka, May - June Suzuki H. and Gawlick H.J., 2003. Biostratigraphie und Taxonomie 2006, p. 139-143.

Received, April 4, 2007 Accepted, November 25, 2007 02 Djeric 101 10-01-2008 11:51 Pagina 107

107

Plate 1 - 1. Acaeniotylopsis ? sp., N¬ 41, x100; 2. Amphipyndax ? sp., N¬ 47, x200; 3. Archaeodictyomitra sp., N¬ 43, x200; 4. Archaeospon- goprunum ? sp., N¬ 42, x200; 5. Dictyomitrella ? sp., N¬ 43, x 200; 6. Dictyomitrella sp., N¬ 44, x 100; 7. Emiluvia sp., N¬ 41, x100; 8. Eox- itus sp. cf. E. hungaricus Kozur, N¬ 44, x300; 9. Eucyrtidiellum sp., N¬ 47, x200; 10. Eucyrtidiellum sp. cf. E. quinatum Takemura, N¬ 47, x200; 11. Eucyrtidiellum unumaense unumaense (Yao), N¬ 45, x300; 12. Guexella ? sp., N¬ 41, x150; 13. Hexasaturnalis hexagonus (Yao), N¬ 46, x300; 14. Hsuum sp., N¬ 46, x200; 15. Hsuum sp. cf. H. matsuokai Isozaki and Matsuda, N¬ 44, x150; 16. Pantanellium sp. cf. P. riedeli Pessagno, N¬ 45, x300; 17. Parahsuum ? sp., N¬ 46, x300; 18. Parahsuum cruciferum Takemura, N¬ 44, x100; 19. Paronaella sp., N¬ 41, x100; 20. Protunuma sp. cf. P. lanosus Osˇvoldova, N¬ 45, x300; 21. Protunuma turbo Matsuoka, N¬ 45, x300; 22. Pseudodicty- omitrella hexagonata (Heitzer), N¬ 41, x200; 23. Ristola sp. cf. R. praemirifusus Baumgartner and Bartolini, N¬ 41, x100; 24. Saitoum levium De Wever, N¬ 45, x300; 25. Sethocapsa sp., N¬ 45, x300; 26. Sethocapasa funatoensis Aita, N¬ 45, x300. 02 Djeric 101 10-01-2008 11:51 Pagina 108

108

Plate 2 - 1. Stauroloche ? robusta Rüst, N¬ 46, x300; 2. Stichocapsa convexa Yao, N¬ 47 x 300; 3. Stichocapsa sp., N¬ 41, x 300; 4. Stichocap- sa sp. cf. S. japonica Yao, N¬ 45, x300; 5. Stichocapsa robusta Matsuoka, N¬ 44, x300; 6. Stichomitra sp., N¬ 42, x200; 7. Stichomitra sp. cf. S. tairai Aita, x200; 8. Stichomitra ? takanoensis gr. Aita, N¬ 45, x200; 9., 10. Tethysetta dhimenaensis s.l. (Baumgartner), N¬ 45, x200; 11. Tethy- setta dhimenaensis ssp. A (Baumgartner et al.), N¬ 45, x200; 12. Transhsuum sp. cf. T. brevicostatum gr. (Osˇvoldova), N¬ 45, x200; 13. Transh- suum sp. cf. T. maxwelli gr. (Pessagno), N¬ 45, x200; 14. Triactoma jonesi (Pessagno), N¬ 41, x100; 15. Tricolocapsa sp. cf. T. formosa Chiari, Marcucci and Prela, N¬ 45, x300; 16. Tricolocapsa ? fusiformis Yao, N¬ 45, x300; 17. Tricolocapsa plicarum ssp. A Baumgartner et al., N¬ 45, x300; 18. Tricolocapsa ? yaoi (Kozur), N¬ 45, x300; 19. Trillus sp., N¬ 46, x200; 20. Unuma echinatus Ichikawa et Yao, N¬ 41, x100; 21. Unuma latusicostatus (Aita), N¬ 45, x300; 22. Williriedellum sp. cf. W. carpathicum Dumitrica, N¬ 45, x270; 23. Xitus sp., N¬ 44, x200.